1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * linux/arch/arm/mach-omap1/board-nand.c
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Common OMAP1 board NAND code
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Copyright (C) 2004, 2012 Texas Instruments, Inc.
8*4882a593Smuzhiyun * Copyright (C) 2002 MontaVista Software, Inc.
9*4882a593Smuzhiyun * Copyright (C) 2001 RidgeRun, Inc.
10*4882a593Smuzhiyun * Author: RidgeRun, Inc.
11*4882a593Smuzhiyun * Greg Lonnon (glonnon@ridgerun.com) or info@ridgerun.com
12*4882a593Smuzhiyun */
13*4882a593Smuzhiyun #include <linux/kernel.h>
14*4882a593Smuzhiyun #include <linux/io.h>
15*4882a593Smuzhiyun #include <linux/mtd/mtd.h>
16*4882a593Smuzhiyun #include <linux/mtd/rawnand.h>
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun #include "common.h"
19*4882a593Smuzhiyun
omap1_nand_cmd_ctl(struct nand_chip * this,int cmd,unsigned int ctrl)20*4882a593Smuzhiyun void omap1_nand_cmd_ctl(struct nand_chip *this, int cmd, unsigned int ctrl)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun unsigned long mask;
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun if (cmd == NAND_CMD_NONE)
25*4882a593Smuzhiyun return;
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun mask = (ctrl & NAND_CLE) ? 0x02 : 0;
28*4882a593Smuzhiyun if (ctrl & NAND_ALE)
29*4882a593Smuzhiyun mask |= 0x04;
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun writeb(cmd, this->legacy.IO_ADDR_W + mask);
32*4882a593Smuzhiyun }
33*4882a593Smuzhiyun
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